Ok, I'll bite. What is *persuasively* appealing in the EM1 to current m43 e-m5 owners?

Your comment was strangely, if not surprisingly, devoid of content.Was it just the initial tepid opening salvo for an intended pejorative sub-thread?

Point one: you are generalizing. "EM5" owners is a very broad term. You take it upon yourself to speak for everyone else? You are the provocateur with your OP.

Some see a 1 stop improvement in DR and noise levels as worth it.

Some see the different ergonomics and expanded controls as worth it.

Some see the ability to use 4/3 lenses as worth it.

Some see the improved IBIS as worth it.

Some see the promise of more rugged construction as worth it.

Some see the wifi capability as worth it.

Some see the higher top shutter speed as worth it.

Some see the overall refinement of various features as worth it.

Even the addition of mic port and pc port can be a worthwhile feature for some (though a mic port with no headphone jack is only half a solution).

As a working concert and performance photographer, all of these are features that make the EM1 preferable to the EM5.

If you don't feel the same I can respect that. I'm not going to insist you are wrong for your subjective preference.

What I don't respect is anyone posting about a few points they don't think are worth the upgrade to them, personally, as though their opinion should be he standard for all, as you have done.

Since you cited a couple of points that many people on this and other forums have already said are worth the upgrade, to them, as NOT being worth it, I stand by my statement that you don't understand why some people will upgrade.--If, in my lifetime, I will have produced just one image that makes a real difference in the life of another, I will have achieved my highest goal as a photographer.